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North Wales Police control room kept motorists updated on the situation throughout the night via social media.

Initially the control room tweeted: “Road Collision #A55 Brittania Bridge eastbound - road is closed and will update when diversions are in place - please take alternative route as long delays expected - emergency services are in attendance.”

Later it added: “Regarding #A55 Brittania Bridge - road will now be closed in both directions and all traffic will be diverted to the Menai Suspension Bridge.”